Selective point cultivator shovel



June 6, 1933. DUFFEY 1,912,477

SELECTIVE POINT CULTIVATOR SHOVEL Filed Oct. 14, 1952" EnnentorE.E.Duffey attorney Patented June 6, 1933 UlllTlill? STATES EAR-L E.DUFFEY, OF GALLATIN, MISSOURI SELECTIVE PGINT 'CULTIVATOR SHOVELApplication filed Getober 14,

This invention relates broadly to the art of husbandry, and moreparticularly to cultivators and selective point cultivator shovels.

It is an object of the invention to provide a cultivator shovel having aremovable share, the latter being provided with a plurality of sharepoints. whereby upon the cutting edges of a point becoming unduly worn,dull or broken another perfect and sharp point carried by the share ofthe shovel may be readily substituted therefor.

Another object of the invention is to provide a device as abovedescribedwhich is of few and simple parts whereby a worn or broken share may beinterchanged for a perfat one at all times and more particularly when acultivator is operating in the field and without the necessity ofobtaining repairs at a blacksmith shop or the like.

A further object of the invention is to provide means whereby a brokenor worn cultivator shovel may be replaced without the necessity andincident expense of replacing the integral landslide and share of theshovel as heretofore practiced in the art.

Other and further objects and advantages of the invention will beunderstood from the following detailed description thereof, refer-- encebeing had to the accompanying drawing. in which:

Figure l is an elevational View of the back of the new device.

Figure 2 is a sectional view thereof taken substantially along thedotted line 22 of Figure 1 and showing the shovel in an in clined normaloperating position.

Figure 3 is an elevational view of the front of the new shovel. and

Figure 4 is a side elevation thereof.

Referring now to the drawing for a more particular description,indicates an arm which is usually carried by a transversely positionedbeam of a cultivator when the new device is employed with a sulky orriding cultivator, the latter not being shown. The arm 10 is usuallyformed of tubular pipes or the like and it will be understood that thelater described device is adjustable longitudi- O nally of the arm andmay be clamped thereto in a selected raised or lowered position for1932. Serial No. 637,798.

governing the depth of the furrow or scarification imparted to the soilby means of the later described shovel.

The new invention may include a clamp for attacl ng the device to thearm 10, the said clamp having an elongated body portion 11 provided witha pair of ears 12 extending therefrom which are adapted to substantiallyencircle the arm 10 and to rigidly and ad-- justably grip the arm when anut 13 carried by a bolt 14 is tightened. As best shown in Figure 1, thebolt 14 extends through the ears for drawing them toward each other atdesired times and a washer 15 may be employed.

A landslide 16 having asmooth outward surface disposed opposite to thearm 10 is pr0- vided and may be secured to the body portion 11 of theclamp by means of counter-sunk rivets'17 or the like, or the landslidemay be formed integral with the clamp as may be desired.

The landslide is of lesser length than the elongated body portion 11 0fthe clamp and provided at its lowermost portion with a beveled edge 18for purposes later described.

A share 19 is removably secured adjacent to the lowermost body portionof the clamp by means of a bolt 20 which extends through said bodyportion of the clamp and the share; the bolt, as best shown in Figure 2,having a counter-sunk head which is in alignment with the smooth surfaceof the share and provided with a nut 21 whereby the share may be securedto the clamp. The share is provided with a plurality of share points 22and beveled edges 23 mid-way between said points.

A selected beveled edge 23 is adapted to memberwith the beveled edge 18of the landslide for preventing revoluble movements of the share on thebolt 20 at times when the former is secured in the position shown inFigure 2. l

Also the bolt 20 may be provided with an angular shank portion 20 whichis adapted to member with similarly shaped formed through the shareandclamp whereby the bolt is adapted to prevent turning movements of theshare with'respect to the clamp recesses although for certain classes ofwork wherein and without the assistance of the beveled edge 18 and abeveled edge 23 membering together and in such case the beveled edges 23of the share have no function except to provide sharp '1 cutting edgesadjacent the points 22.

The front or face 24 of the share 19 is smooth and slightly concaved incontour and the medial portion thereof is normally in alignment with thesmooth face ofrthe landslide at all times when the parts are assembledas shown in Figure 2.

Preferably 3 share points are employed a more acutely shaped point isdesired two of i the latter may be employed, and for certain other typesof work four or five share points 5 7} may be provided in lieu of thethree illus- It is well-known that the points of cultitrated in theconcrete and specific embodiment of the invention shown in the drawing.

vator shovels become worn in use and frequently parts thereof becomebroken away by contact with rocks, roots and the like.

In practice should a share point 22 become broken or the beveled cuttingedge 23 thereof become unduly worn, the operator may replace the samereadily and at any time by loosening the nut 21 to an extent suflicientfor rotating the share on the bolt 20 or rotating the bolt and share toa position whereby a selected point of the share is adapted to be placedin engagementwith the soil and tightening the nut 21 and causing abeveled edge 23' thus selected to member with the opposed adjacentbeveled edge 18 of the landslide for preventing rotary movements of theshare upon the bolt 20 as a pivotal point in instances where aconventional bolt is employed.

m It is obvious that by means of the present arrangement of a two piececultivator shovel wherein the landslide and share are separable that anintegral landslide and share need not be purchased when it is desired toreplace a defective member as heretofore practiced in the art, also itwill be apparent that for certain types of manually operated cultivatorsthat an interchangeable share point is provided by means of the presentconstruc tion wherein a landslide may be omitted.

principles and spirit thereof and for this reason I do not wish it to beunderstood as limiting myself to the precise arrangement and formationof the several parts herein shown in carrying out my invention inpractice except as claimed.

What I claim and desire to secure by Letters Patent is:

In a cultivator, the combination of a shovel arm, a clamp adjustablymounted on the arm, a landslide secured across the forward face of theclamp and having an inwardly and downwardly beveled lower edge spacedabove the lower end of said clamp, a share having a non-circular axialopening and adapted to fit against the lower projecting portion of theclamp, said share having a plurality of points with beveled edges extending between the points, said beveled edges extending rearwardly andinwardly and adapted to selectively overlap the lower beveled edge ofthe landslide to seal the space between the landslide and the share,said projecting lower end of the clamp having a non-circular openingtherethrough, and an axial bolt having a non-circular shank ext l' tl'ltl d' l f Lent m nou 1 1e concspon mg y oimed openings in the share andthe clamp for bind ing the share on the latter and against the loweredge of the landslide.

In testimony whereof, I have afiixed my signature.

EARL E. DUFFEY.

